For a while now I've been quite happy running LibreWolf, with Bitwarden and some other privacy extensions. I've also switched over from Google to Kagi as a search engine; doesn't keep me anonymous, but I do love not being the product for once.
LocalCDN - A much more functional alternative to Decentraleyes which actually does benefit privacy
Temporary Containers - A critical plugin I use to enforce fresh "containers" for certain kinds of browsing. Works with MAC as well; allowing me to isolate critical SNSes and such from just any random old site I visit.
TrackMeNot - Search Engine Privacy tool; set on a very slow; non-default interval. This injects some "background noise" of activity into search queries and browsing traffic.
uBlock Origin - Absolutely Essential Adblocker. This addon shoulders a large load of the blocking and filtering work.
Allow Right-Click - Essential tool to break websites' habit of interfering with my right to use my browser's functionality.
Unsupported or "Problematic" Addons
uMatrix - Additional content filtering addon. Equipped with a lightweight hosts list that only affects well known bad acting sites and trackers. Provides a frontline of defense against novel tracking and fingerprinting domains.
^ Listen; say what you want; I don't care. This addon is something I always pair with uBlock Origin as it provides an additional safety guard against unforeseeable objects, scripts and other nonsense that may appear on a webpage. I can cherrypick what I believe the website needs to function; while denying access to third party scripts and other objects. I still use it to defend my privacy every day.
WhatCampaignSorryIcouldn'tfindaworkingsourcelink;itseemstobedown. - This addon breaks URL tracking breadcrumbs by obfuscating them; which breaks various websites' attempts at tracking behavior and interferes with websites' ability to take actions based on URL tracking.
SponsorBlock for Youtube - Like it or not this little addon saves me a ton of time and helps me avoid feeding an algorithm by alerting me to sponsored videos and skipping unwanted commercials in content I consume. Depending on your ethics; you may or may not want this addon.
Privacy Pass - Sometimes you just gotta do something about captchas...This tool can help reduce them while respecting your privacy
Privacy Redirect - [PARTIALLY DISABLED VIA ADDON CONFIGURATION] - Sometimes you just gotta say "Nope!" to a website like Twitter or Google in general and visit a more privacy respecting mirror website. Invidious anyone? (Unfortunately oftentimes these mirror sites are getting sniped and go down frequently for various reasons; making this addon a frequenly frustrating and unreliable one because you have to disable it so often.)
I like Firefox. But, I don't know why, I still prefer using a Chromium-based browser like Brave. Wow, I didn't know there is an extension called "Allow Right-Click". I find that annoying for some sites that disable users using right click, I usually want to open the link in the new tab then I use (Ctrl+Left Click) instead